Rocket propulsion

A large rocket with an exhaust speed of v=3000m/s develops a thrust of 24 million Newton.
a. How much mass is being blasted out of the rocket exhaust per second and
b. what is the max speed the rocket can attain if it starts from rest in a force-free environment with v=3000m/s and if 90% of its initial mass is fuel and oxidizer?

a. 8 thousand kg (=24mill/3000)
b. I'm not sure what the question is asking at all